When installing Office 2003, the formula editor will not be installed by default if the typical installation method is adopted. Therefore, if users can't find the Microsoft Formula 3.0 option in the object type list of Word2003, they need to install the Formula Editor tool.

Taking Windows XP system as an example, the operation steps are as follows:

2. Open the control panel window and double-click the Add/Remove Programs icon.

3. In the open Add or Remove Programs dialog box, switch to the Change or Remove Programs tab, select the Microsoft Office Professional Edition 2003 option in the list of currently installed programs, and then click the Change button.

4. Open the Maintenance Mode Options dialog box of the Microsoft Office 2003 installation wizard, select the Add or Remove Features radio box, and then click the Next button.

5. In the custom installation dialog box that opens, select the "Select advanced customization of application" check box, and then click the "Next" button.

6. Open the Advanced Customization dialog box, expand the Office tools catalog, and then click the Formula Editor option. Select the "Run from this computer" command from the menu that opens.

7. The installation wizard prompts the user to find the Office2003 installation source file, click Browse to find the Office installation source file, and click OK to complete the installation.